Troubleshooting for Outdoor Unit
SiUS121736EA
195
Service Diagnosis
7.12 Discharge Pipe Temperature Control
Error Code
F3
Outdoor Unit LED
Display
A
j
1
i
2
h
3
i
4
h
5
h
Method of Error
Detection
An error is determined with the temperature detected by the discharge pipe thermistor.
Error Decision
Conditions
If the temperature detected by the discharge pipe thermistor rises above
A
, the compressor
stops.
The error is cleared when the discharge pipe temperature is dropped below
B.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Supposed
Causes
Defective discharge pipe thermistor
(Defective outdoor heat exchanger thermistor or outdoor temperature thermistor)
Defective electronic expansion valve or coil
Refrigerant shortage
Defective four way valve
Water mixed in refrigerant
Defective stop valve
Defective outdoor unit PCB
Troubleshooting
Check No.01
Refer to P.209
Check No.12
Refer to P.212
Check No.14
Refer to P.213
A
B
18 class
120°C (248°F)
95°C (203°F)
24/36 class
120°C (248°F)
107°C (224.6°F)
(R20417)
Caution
NG
OK
OK
OK
NG
NG
∗
Discharge pipe thermistor
∗
Outdoor heat exchanger thermistor
∗
Outdoor temperature thermistor
∗
Refrigerant shortage
∗
Four way valve
∗
Water mixed
∗
Stop valve
Check No. 12
Check the electronic
expansion valve.
Replace the
defective
thermistor(s).
Replace the electronic
expansion valve or the coil.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB (main PCB).
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check No. 01
Check the thermistors.
Check No. 14
Check the refrigerant line.
Содержание 4MXS-R Series
Страница 7: ...SiUS121736EA Table of Contents vi 3 Operation Limit 267...
Страница 23: ...SiUS121736EA Specifications 10 Part 2 Specifications 1 RA Indoor Unit 11 2 SA Indoor Unit 19 3 Outdoor Unit 22...
Страница 133: ...SiUS121736EA Wired Remote Controller BRC944B2 Remote Controller 120 6 Wired Remote Controller BRC944B2...